Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
225	SCIENCE TECHNICIANS, N.E.C.	1,185	474
235	TECHNICIANS, N.E.C.	3,563
453	JANITORS AND CLEANERS	14
633	SUPERVISORS, PRODUCTION OCCUPATIONS	1,185
653	SHEET METAL WORKERS	122	6
725	MISCELLANEOUS METAL AND PLASTIC PROCESSING MACHINE OPERATORS	880
738	WINDING AND TWISTING MACHINE OPERATORS	610	244
756	MIXING AND BLENDING MACHINE OPERATORS	1,430	996
783	WELDERS AND CUTTERS	597	10
789	HAND PAINTING, COATING, AND DECORATING OCCUPATIONS	660	587
889	LABORERS, EXCEPT CONSTRUCTION	3,791
TOTAL		14,038	2,317

*(1) The estimates for each occupation apply across the surveyed industries in which the agent was observed. Not all industries were surveyed, and not all agents were observed in all surveyed industries. (2) When using the estimates, standard errors associated with estimates should be considered. (3) Potential exposures to a chemical agent are categorized as actual (i.e., the surveyor observed the use of the specific agent) or tradename (i.e., the surveyor observed the use of a tradename product known to contain the specific agent). The estimates presented in the table combine both categories.